Trump's trip to Saudi Arabia is a 'huge success' for its 31-year-old deputy crown prince

“A majority of Arab states are going to be there, as well as at least 50 Islamic states,” he said. “They’re going to make a huge declaration. President Donald Trump is going to make a speech … and they’re going to open a big center for fighting extremism and (supporting) Islamic moderation.”

Salman, 31 years old, has taken a central role in Saudi Arabia’s efforts to build its economy beyond the oil industry. He holds primary responsibility for the kingdom’s military and energy sector.